// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 9.5.3
description: >
    The trap returns a boolean result.
features: [Proxy]
---*/

function Test() {
    var target = {};
    var p = new Proxy(target, {
      isExtensible: function(t) {
        if (Object.isExtensible(t)) {
          return 1;
        } else {
          return 0;
        }
      }
    });

    assert.sameValue(Object.isExtensible(p), true);

    Object.preventExtensions(target);

    assert.sameValue(Object.isExtensible(p), false);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
